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WiFi dropping randomly

None of my devices has ever had dropping problems with the WiFi (iPhone, iPad, S6 Edge+, notebook and a wifi extender). But since I bought the S2, it is randomly dropping connection, with no pattern.

Which model did you buy?

SM-T719
It's the latest 8" with qualcomm

Yes I'm having the same issue in the T713 model but not in the T813 model, both are th Qualcomm model

Im having the same issue with mine. I called samsung support and they were no help.

Same issue with sm-t713
Sent from my SM-T713 using Tapatalk

Same issue with SM-T813, found a temporary fix.
Just replaced my SM-T810 with a SM-T813, and ran in same wifi drop issue. My girlfriend and her SM-T813 ran in the same issue too. It happen randomly from 3-4 times per hour to one time in 2 hours. I foud it only occurs on 2.4ghz network connected in N. It happen to me on 3 differents routers, DIR-868L REV B 2.04, DIR-868L Advanded Tomato, DIR-628, and Asus RT-AC68U stock with latest firmware. If i configure the 2.4ghz band to G only, no issue, also, the 5ghz band got no issues at all. Hope this help your issues while waiting for a fix from Samsung.

Thanks for the tip. I can confirm that 5ghz wifi works perfectly. Hopefully samsung will fix soon.

ndompierre said:
Just replaced my SM-T810 with a SM-T813, and ran in same wifi drop issue. My girlfriend and her SM-T813 ran in the same issue too. It happen randomly from 3-4 times per hour to one time in 2 hours. I foud it only occurs on 2.4ghz network connected in N. It happen to me on 3 differents routers, DIR-868L REV B 2.04, DIR-868L Advanded Tomato, DIR-628, and Asus RT-AC68U stock with latest firmware. If i configure the 2.4ghz band to G only, no issue, also, the 5ghz band got no issues at all. Hope this help your issues while waiting for a fix from Samsung.
Click to expand...
Click to collapse
Valid information, ndompierre!!
I´m situated in Germany and bought a S2 8.0 (SM-T710, Android 5.0.2) last week.
One of my use cases is watching movies which are stored on my NAS. With my "old" Nexus 7 (2013) everything worked like a charm.
But with the S2 I ran into the issue that the movies stucked once in a while.
At first I thought it had something to do with the apps I am using, BSPlayer and MX Player Pro (which work fine with the Nexus).
I even downloaded VLC Player but the same behaviour occured.
Then I downloaded the movie locally to my Tab and deactivated WiFi. Bingo..played without any hiccup. Proof enough that everything is fine with the apps.
So I googled a bit and came across this WiFi issue others also have. After I followed your proposal and changed the 2.4GHz band in my router from option "802.11n+b+g" to "802.11b+g" everything works fine again. No dropout during the whole streamed movie.
So I hope, too, that Samsung will come up with a WiFi fix soon.

Interesting. I've noticed that since updating to MM, my T810 seems to frequently switch to my other wifi networks on me. My preferred SSID is 2.4GHz N mode. I never catch it happening when I'm using the tablet, but after going to sleep and waking it up it literally seems always to be on the "wrong" network if I've previously switched it to the "right" one (not sure if it hops off the other 2.4GHz ones as well). I'll stick wiht 5GHz for the time being!

Saw Spotify dropping out a few times this weekend while connected to a wifi Hotspot. Haven't had a chance to test it at home yet. T817W model running Marshmallow.
Sent from my SM-N930W8 using Tapatalk

I bought the T719 LTE 8.0 inch Version last week and also hab wifi connection problems, but only when in airplane mode. My Router is am fritzbox 7490 at 5ghz. Currently without any reason the wifi connection is stable. When in LTE mode the wifi was always stable.

I have the same problem too. (T719 LTE model) I was wondering would the radio mode consume battery faster instead of airplane mode?
P.S. I still have problem but i am on airplane mode. Have not tried yet radio mode

disconnecting wifi
I have the t819 bought it last week constantly dropping wifi had the s3 tablet before never happened also have ipad and does not happen. Sent samsung an email but still waiting for reply

My T813 does this, but only on battery when optimization is on. When it's on the charger, or I turn power optimization off, it stays connected pretty solidly. I suspect a fault in the power management.
It is kind of annoying, as I have some clients that have to be restarted every time the network drops.

jshamlet said:
My T813 does this, but only on battery when optimization is on. When it's on the charger, or I turn power optimization off, it stays connected pretty solidly. I suspect a fault in the power management.
It is kind of annoying, as I have some clients that have to be restarted every time the network drops.
Click to expand...
Click to collapse
How do you turn optimization off? Battery optimization can be turned off on my tablet, but it has to be done app by app (one at a time)

Android 7 - 5Ghz WiFi slow

Jun-3 2017 got OTA update a few weeks ago. T813 doesn't have problem connecting to 5Ghz wifi but on 5Ghz the connection is slow. Appears to be capped at about 10MB. Whenever I run speedtest while connected to my 5Ghz network I get 10MB uploads. Disconnect from 5Ghz, rerun speedtest and I get 80MB uploads. Go back to 5Ghz rerun speedtest, back to 10MB. Can reproduce this every time.
I guess I am stuck not using 5Ghz.

oTeMpLo said:
change channel to 40 (on router/AP).. and test,.
Click to expand...
Click to collapse
Found this in a different thread. Changed to channel 40 and speedtest shows upload speeds of 80MB. Netgear recommends using channels above 149 but I will stick to 40. Anyone know why using the lower band 5Ghz channels gives higher speeds than the higher band channels?

do you happen to be using a euro model in north america? what is your CSC and which country are you using the device?

On router (if possible) change channel width to 20 any frequency should fix wifi. Atleast for me this worked
Sent from my SM-T813 using Tapatalk

After changing the routers channel bandwith, this thing goes from 10 mbps to 80mbps. They need to fix this. All my other devices max out at 235mbps on 5ghz. This tab is too advanced to be doing this.

Had the exact same issue on my new T713 and the channel width change from Auto to 20 worked for me on Asus router. Left the Control Channel on Auto. Thanks!

I had this same issue too. I had to turn off Power Save Support then I didn't have anymore 5 GHz slowdowns

boloj said:
I had this same issue too. I had to turn off Power Save Support then I didn't have anymore 5 GHz slowdowns
Click to expand...
Click to collapse
Mine had the slowdown with Power Save off - the channel bandwidth was what fixed mine.

hey guys, my download speed is very slow on 5ghz wifi, but few time ago was working well, I dont know what happened. My macbook reach 120MB download and 10MB upload, but my galaxy s8 shows 10MB dowload speed. I tried change my channel width on router, but didn't work.

DANILO LAURINDO said:
hey guys, my download speed is very slow on 5ghz wifi, but few time ago was working well, I dont know what happened. My macbook reach 120MB download and 10MB upload, but my galaxy s8 shows 10MB dowload speed. I tried change my channel width on router, but didn't work.
Click to expand...
Click to collapse
I'm finding 5GHz to be a real mixed bag across all of my devices - Tab S2 T713, 2 iPad Air 2's, Dell XPS 13 9350 laptop, a Lenovo desktop, 2 Dell desktops, and a Galaxy S7 Edge phone. Performance seems to be inconsistent and I see complete dropouts where the band isn't even visible on some devices. This is irrespective of distance from the router, an Asus RT-AC66U_B1, number of connected devices, etc. When it's good, I see 120MB/sec but other times it will drop off by 50% or more or will disconnect. I've pretty much reverted to 2.4GHz except when I get the urge to test 5GHz out again.

5.0Ghz wifi not showing after pie update.

So I bought note 9 two days ago and it was on Samsung experience 9.5, oreo 8.1. I have a dual band D link router which has both 5.0Ghz and 2.4Ghz wifi. But after pie update the phone is not picking the 5ghz band at all. I have reset the phone clear cache and also changed router settings.
I think its a software problem of one ui. Is any one facing this issue? Anying I can do to get back 5.0Ghz?
Any suggestion will be appreciated.

Not sure what is causing your problem, don't think it's anything to do with Pie update.
I have been using Pie for months and use 5Ghz wi fi without issues.
Also haven't read of others having similar issues on this forum .
Have you tried wi fi analyser app
https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer

Tried with app and still nothing. I have reset the phone, cleared cache and still nothing. Mine is a exynos model and it's update handled by Malaysian samsung team.
After One ui pie I don't even see 4k 60 fps recording in rear camera option. It's an awful update. So many things are missing. They need to work on one ui.

Aelham169 said:
Tried with app and still nothing. I have reset the phone, cleared cache and still nothing. Mine is a exynos model and it's update handled by Malaysian samsung team.
After One ui pie I don't even see 4k 60 fps recording in rear camera option. It's an awful update. So many things are missing. They need to work on one ui.
Click to expand...
Click to collapse
The 4K option is there. Click the 16:9 ratio then click the 1080P option. You're welcome.

Mr. Orange 645 said:
The 4K option is there. Click the 16:9 ratio then click the 1080P option. You're welcome.
Click to expand...
Click to collapse
Thank You . But I really want the 5.0Ghz band as my speed is super fast. I can download 2 GB in less than a min. 2.4Ghz sucks. I have just reset my router and still not picking 5.0 Ghz up.

Aelham169 said:
Thank You . But I really want the 5.0Ghz band as my speed is super fast. I can download 2 GB in less than a min. 2.4Ghz sucks. I have just reset my router and still not picking 5.0 Ghz up.
Click to expand...
Click to collapse
Not sure what to tell you. 5.0Ghz works just fine on mine. And I've been on the beta since it was released and now on the official Pie. Never had an issues with it.

Try to change the channel and check.
Sent from my SM-N960F using Tapatalk

Aelham169 said:
Thank You . But I really want the 5.0Ghz band as my speed is super fast. I can download 2 GB in less than a min. 2.4Ghz sucks. I have just reset my router and still not picking 5.0 Ghz up.
Click to expand...
Click to collapse
I have had a similar problem before and since the Pie update. I use 5 ghz band in the same room as my router. 2 Apple devices and my LGV20 are connected to the same 5ghz band. I used wifi analyzer to choose the best channel which for me is channel 40. The other devices hold signal even after sleeping. My Note 9 (unlocked American version) sometimes just loses internet. There is an exclamation point next to the wifi icon. When I check wifi analyzer the signal strength is fine (lower absolute value than 60 or higher value than -60 dbm). The worst thing is once the exclamation point appears (meaning no internet despite retained connection to router) it will never reconnect to internet unless I turn phone wifi off and on. Resetting router has no effect. I reserved an ip for the Note 9 and put the phone on fixed ip so it won't get booted by another device. I'm at my witts end.
---------- Post added at 04:59 PM ---------- Previous post was at 04:45 PM ----------
paul_59 said:
Not sure what is causing your problem, don't think it's anything to do with Pie update.
I have been using Pie for months and use 5Ghz wi fi without issues.
Also haven't read of others having similar issues on this forum .
Have you tried wi fi analyser app
https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer
Click to expand...
Click to collapse
If you search the internet you will. Lots of us have wifi icon suddenly show an exclamation point next to it
This means good connection but NO INTERNET! This despite other devices on same 5 ghz network have no problem. Wifi analyzer shows good signal and no competing networks.
The temp fix is wifi off wifi on now it reconnects and everything is fine for 20 minutes or several hours but eventually the exclamation point is back. If it would reconnect or at least try to reconnect it would work but it just sits there waiting for me to do manually.
If we had Bixby routines like the GS10 I would write a routine to toggle wifi when there is no internet but the problem is the wifi IS connected to the router so there is probably no way to write that as a routine... and we don't get routines anyway.
I agree it isn't due to Pie in fact mine is slightly more stable since pie but still that damn exclamation point!
Sent from my SM-N960U1 using Tapatalk

Every time I turn off my snapdragon U.S. version note 9, I have to stand very close to the router for like ten minutes before going upstairs to my room. I have to be standing close to it before it gets picked up by the 5gz wifi. If I do not stand next to it for 10 mins after turning my phone off then on, it will not pick up the 5ghz. I know that sounds simple, but it worked for me.
(I tried first: changing wifi channels, restarting the router, turning off the 2ghz and not the 5ghz, changed passwords for each, I mean everything.)
Hope that helps!

A.Noob said:
Every time I turn off my snapdragon U.S. version note 9, I have to stand very close to the router for like ten minutes before going upstairs to my room. I have to be standing close to it before it gets picked up by the 5gz wifi. If I do not stand next to it for 10 mins after turning my phone off then on, it will not pick up the 5ghz. I know that sounds simple, but it worked for me.
(I tried first: changing wifi channels, restarting the router, turning off the 2ghz and not the 5ghz, changed passwords for each, I mean everything.)
Hope that helps!
Click to expand...
Click to collapse
That might help the op who posted months ago and likely solved his problem or returned his phone.
No, as I explained mine always connects and may remain connected for hours or for minutes. It never disconnects. It remains connected to router but stops receiving internet randomly at any time (connected wifi icon with ! next to it
I only use wifi in the same room as the router. It is my mancave and I spend all leisure time at home in that room. I shut off the wifi and the phone before bed. I have unlimited lte data but 5 ghz wifi is way faster. 2.4 ghz is perfectly stable but no faster than LTE+
Sent from my SM-N960U1 using Tapatalk

5ghz AC wifi has always worked for me on any channel, running openwrt on my tplink archer c7 router.
N960F running latest devbase pie rom.

That's good for you but no help to the rest of us. I guess one might deduce my phone is faulty but if so a LOT of Samsung phones have had this flaw for years back to the s7.. I figured if anyone in the world knew the solution he would be in XDA
Sent from my SM-N960U1 using Tapatalk

recDNA said:
That's good for you but no help to the rest of us. I guess one might deduce my phone is faulty but if so a LOT of Samsung phones have had this flaw for years back to the s7.. I figured if anyone in the world knew the solution he would be in XDA
Sent from my SM-N960U1 using Tapatalk
Click to expand...
Click to collapse
What roms have you tried?
Why don’t you downgrade to Oreo and see if it works again?

It was the same in Oreo. My phone is stock unlocked Note9 on VZW.
Sent from my SM-N960U1 using Tapatalk

recDNA said:
That might help the op who posted months ago and likely solved his problem or returned his phone.
No, as I explained mine always connects and may remain connected for hours or for minutes. It never disconnects. It remains connected to router but stops receiving internet randomly at any time (connected wifi icon with ! next to it
I only use wifi in the same room as the router. It is my mancave and I spend all leisure time at home in that room. I shut off the wifi and the phone before bed. I have unlimited lte data but 5 ghz wifi is way faster. 2.4 ghz is perfectly stable but no faster than LTE+
Sent from my SM-N960U1 using Tapatalk
Click to expand...
Click to collapse
Was trying to help the op who posted just last month.

[lol] Samsung S20 FE no 5Ghz wifi?

Are you kidding me right now?

Trashking said:
Are you kidding me right now?
Click to expand...
Click to collapse
I think that is your device... Mine works both 2.4 and 5 ghz just fine.

S20 FE has WiFi 6 support, so not only it does 5Ghz, it supports everything between 1 and 6 GHz range as well.

bladez said:
it supports everything between 1 and 6 GHz range as well.
Click to expand...
Click to collapse
Uhhh..No.
Wifi 6 on this phone is still only 2.4ghz and 5ghz.
Wifi 6E adds support for 6ghz.
See https://www.techspot.com/news/83483-wi-fi-alliance-introduces-new-wi-fi-6e.html

Rick_BR said:
I think that is your device... Mine works both 2.4 and 5 ghz just fine.
Click to expand...
Click to collapse
+1,
@Trashking
I think its WF6 which you might be referring too? which is still a relatively new standard.

Ok... For some reason my 5Ghz at home wasn't showing up (for a couple days)
Then now it just showed up as an option.
Weird.
After looking around online, there were some rumors that the screen refresh rate set to 120Hz might interfere with the 5Ghz wifi. For anyone else looking, that setting had nothing to do with my issue.
Rick_BR said:
I think that is your device... Mine works both 2.4 and 5 ghz just fine.
Click to expand...
Click to collapse

U have to set ur 5GHZ wifi to channel 155 (for my router there was no 155, i chose 157 instead) in order for ur s20 FE to find it. then u will be able to see the "SSD" of ur 5GHZ wifi in "Available networks" under the wifi settings tab. My router supports both 2.4Ghz and 5Ghz so put different names for both and after selecting the channle i was able to see the 5Ghz one!
I discovered it when I saw a 5Ghz wifi with 155ch visible with an app called wifi analyzer (under the "Access points" tab). Then i changed my channel to that and Voila! there it is. Also, sometimes i couldn't find my 5Ghz wifi in the settings. In that case i used the same app to find my wifi under the "Access Points" tab and double click on it, then it would give me an option "Connect?"
Hope this helps y'all!

Trashking said:
Ok... For some reason my 5Ghz at home wasn't showing up (for a couple days)
Then now it just showed up as an option.
Weird.
After looking around online, there were some rumors that the screen refresh rate set to 120Hz might interfere with the 5Ghz wifi. For anyone else looking, that setting had nothing to do with my issue.
Click to expand...
Click to collapse
yeah thats becos of the channel keeps on changing. set the channel to 155 or anything else closest to 155!

Samsung Dex HDMI wifi problems

hello good evening colleagues
I have an issue that had already happened to me on my samsung S9 and now it happens to me on my s20 FE 5g
the problem occurs in samsung Dex HDMI
when using any app or game
the internet is slow and does not load or loads very slowly and disconnects me.
It had happened to me before, but I don't remember how I solved it.

this happens when i connect my HUB + HDMI adapter and start samsung Dex . Network speed drops drastically.

Hello partners
after an insatiable fight.
after buying another HUB + usb + HDMI. and HDMI 2.0 cable
the problem persisted.
until I remember that the problem lies in the internet modem.
hahaha
The problem is exactly in the channel where the modem is configured, you have to find which channel is less saturated
in automatic mode it showed me very slow.
I hope this information is useful.
since in automatic channel the speed of the s20 FE can drop very drastically (of course it also depends on the modem if it is modern or old)

Can this thread be closed?
the problem comes from android 13 update
apologies...

Walmart onn adapters work perfect , no lag.

Tigerevo said:
Walmart onn adapters work perfect , no lag.
Click to expand...
Click to collapse
hello colleague
yes, you are right
my problem is with wifi usually in 2.4 ghz networks.
in online games.
It lags, in an unenjoyable way.
Since android 13 this problem arose.
At the moment I only have a router 1 band 2.4

mezacorleehone said:
hello colleague
yes, you are right
my problem is with wifi usually in 2.4 ghz networks.
in online games.
It lags, in an unenjoyable way.
Since android 13 this problem arose.
At the moment I only have a router 1 band 2.4
Click to expand...
Click to collapse
You can try getting closer to router , also on phone go to dev settings and limit background apps to none or 1 at bottom. That usually gives a little speed boost. You can prob find a 5g router at goodwill , and if it doesnt work out of box you can go look up dd wrt for it !

Tigerevo said:
You can try getting closer to router , also on phone go to dev settings and limit background apps to none or 1 at bottom. That usually gives a little speed boost. You can prob find a 5g router at goodwill , and if it doesnt work out of box you can go look up dd wrt for it !
Click to expand...
Click to collapse
hello colleague
Thanks for your reply.
I already tried everything on my Router.
With Android 12 everything was running fine.
It is a 2.4ghz router.
Already modify any type of parameter. (scope, channels, etc)
but everything stays the same.
I clarify, the failure is in online games, there is a delay.
on facebook it may take a while to load between other apps.
in another house there is a dual band router.
In 5g there seems to be no delay, everything flows fine.
but i connect to 2.4 and it starts the delays.
something that did not happen to me in android 12.

mezacorleehone said:
hello colleague
Thanks for your reply.
I already tried everything on my Router.
With Android 12 everything was running fine.
It is a 2.4ghz router.
Already modify any type of parameter. (scope, channels, etc)
but everything stays the same.
I clarify, the failure is in online games, there is a delay.
on facebook it may take a while to load between other apps.
in another house there is a dual band router.
In 5g there seems to be no delay, everything flows fine.
but i connect to 2.4 and it starts the delays.
something that did not happen to me in android 12.
Click to expand...
Click to collapse
Yes 5g is faster up close . The 2g is slower also bc everything ran off 2g . Think about 2g house phones everyone had. Theres more traffic on those . 5g has less traffic which helps increase your bandwidth.

Hi,
just wanted to mention, that i have the same issue
* on a Galaxy S22 with android 13 (regardless of Dex, but whenever screen is shared via a usb-c to hdmi adapter) and
* on a Huawei P20 Pro with android 12 (sometimes, not always)
replugging the usb-c adapter always immediately solves the issue but only for a brief time.
I hit this problem while traveling and using the hotel tv to watch movies that I stream via the phone over the hotel wifi (80mbits, but when the bug is on: <1 mbit) (changing the router is obviously not feasible in my case )
Could that be a general android / kernel bug?
Does anyone have a hypothesis for a technical explanation?
The bug is not occuring on 4G cellular network. Didn't test for 5ghz Wifi